Waves crash against a lighthouse as the wind blows at around 120 kph (75mph), in Boulogne-sur-Mer, northern France, November 20, 2016. (Photo by Pascal Rossignol/Reuters)

Two Canadian Forces Griffon helicopters fly from York Sound to Iqaluit after taking part in the Operation Nanook military exercise on Baffin Island, Nunavut August 26, 2014. (Photo by Chris Wattie/Reuters)

Canoes are seen on a dock on Lake Louise at Banff National Park, in the Canadian Rocky Mountains outside the village of Lake Louise, Alberta, October 3, 2014. (Photo by Mark Blinch/Reuters)

Cayuga Creek water rushes past a neighbourhood following a massive snow storm in Lancaster, New York November 24, 2014. Emergency workers filled thousands of sandbags on Sunday as the area around Buffalo, New York braced for potential flooding as warming temperatures began to melt up to seven feet (2 metres) of snow. (Photo by Mark Blinch/Reuters)

Waves crash against a lighthouse in Viavelez, northern Spain, January 21, 2015. (Photo by Eloy Alonso/Reuters)

A general view of the Tequendama Falls (Salto del Tequendama) near Bogota March 21, 2015. (Photo by John Vizcaino/Reuters)

A boat lies on the banks of Phewa Lake in Pokhara, west of Nepal's capital Kathmandu June 29, 2015. Phewa, or Fewa, Lake is the second largest lake in Nepal. (Photo by Navesh Chitrakar/Reuters)

Moored boats are seen on Loch Faskally, as autumn leaves are reflected in the water, in Pitlochry, Scotland October 18, 2016. (Photo by Russell Cheyne/Reuters)

A boat travels past a part of the West Lake covered by lotus leaves, in Hangzhou, Zhejiang province, China, July 2, 2015. (Photo by Reuters/Stringer)

An overall view shows the Horseshoe Falls in Niagara Falls, Ontario, August 22, 2015. Picture taken August 22, 2015. (Photo by Charles Platiau/Reuters)

A general view taken from the Canadian side shows the Horseshoe Falls in Niagara from the Canadian side in Niagara Falls, Ontario, August 21, 2015. Picture taken August 21, 2015. (Photo by Charles Platiau/Reuters)

Waves crash against the shoreline at the mouth of Ghajn Tuffieha (Apple's Eye) Bay on the northwest coast of Malta, February 18, 2016. (Photo by Darrin Zammit Lupi/Reuters)

Venezuelan Olympic team sailor Jose Vicente Gutierrez sails his laser yacht during a training session in Naiguata, in the state of Vargas, Venezuela April 30, 2016. (Photo by Marco Bello/Reuters)

A stone falls into a small lake at Serles mountain on a sunny autumn day in the western Austrian village of Mieders, Austria September 10, 2016. (Photo by Dominic Ebenbichler/Reuters)

A view shows a beach at the Ny-Aalesund research station on the Arctic archipelago of Svalbard, Norway, September 20, 2016. (Photo by Gwladys Fouche/Reuters)

Huge waves crash on the San Esteban de Pravia seafront in the northern Spanish region of Asturias November 18, 2016. (Photo by Eloy Alonso/Reuters)

A view of a waterfall in the protected forest at the Welirang mountain in Malang, East Java province, February 10, 2010. (Photo by Sigit Pamungkas/Reuters)

An oil and gas drilling platform stands offshore in the Gulf of Mexico off Dauphin Island, Alabama, U.S. on October 5, 2013. (Photo by Steve Nesius/Reuters)